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MECHANICAL CHARACTERIZATION OF CELLS AND TISSUES AT THE MICRO SCALE
Higuita Castro, Natalia; Hansford, Derek J.
  • Higuita Castro, Natalia; The Ohio State University. Biomedical Engineering Department. Nanotech West Laboratory. Columbus. US
  • Hansford, Derek J; The Ohio State University. Biomedical Engineering Department. Nanotech West Laboratory. Columbus. US
Rev. ing. bioméd ; 2(3): 56-64, graf
Article in English | LILACS | ID: lil-773330
ABSTRACT
Cell-substrate interactions are relevant for a number of biological and clinical applications e.g. to determine the effectiveness of medical implants. Cells are natural transducers that respond to and sense signals originating in their microenvironment. One important cell signaling mechanism is known as chemo-mechanical transduction. This refers to the use of external mechanical cues to initiate internal biochemical cellular processes and vice versa. One key factor to characterize and understand these interactions is the evaluation of the mechanical forces present at the cell-substrate interface. Recent advances in the micro and nanotechnology fields have allowed the development of new tools for the measurement of cellular and tissue forces. These tools have provided a means to study extremely low cellular and subcellular forces (pN-µN) as well as detailed small-scale tissue mechanics. This paper will review some of the most significant approaches to characterize the mechanical properties of cells and tissues at the micro-scale. Material properties, device fabrication, and design issues will be discussed.
RESUMEN
Las interacciones célula-sustrato juegan un papel fundamental en gran número de aplicaciones biológicas y clínicas. Las células son transductores naturales que sensan y responden a señales en su entorno fisiológico. Uno de los mecanismos más importantes empleados en la caracterización de interacciones celulares es la transducción químico-mecánica, la cual se basa en la implementación de señales externas que se aplican a la célula con el fin de inducir diversos procesos bioquímicos al interior de ésta y viceversa. Los avances alcanzados en el campo de la micro y nanotecnología han permitido el desarrollo de nuevas herramientas para medir fuerzas a nivel celular o incluso sub-celular (pN-µN), y dilucidar la mecánica de los tejidos en la escala micrométrica. La presente revisión literaria describe algunos de los micro-dispositivos empleados actualmente para caracterizar las propiedades mecánicas de las células y tejidos en la micro-escala.

Full text: Available Index: LILACS (Americas) Language: English Journal: Rev. ing. bioméd Journal subject: Biotechnology / Biomedical Engineering Year: 2008 Type: Article Affiliation country: United States Institution/Affiliation country: The Ohio State University/US

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Full text: Available Index: LILACS (Americas) Language: English Journal: Rev. ing. bioméd Journal subject: Biotechnology / Biomedical Engineering Year: 2008 Type: Article Affiliation country: United States Institution/Affiliation country: The Ohio State University/US